In addition to offering immediate access to the content, the PDF download of this standard presents selected graphics in color for enhanced readability.Īlso Available: ANSI/ASHRAE/IES Standard 90.1-2010 A new alternate compliance path to Section 6, "Heating, Ventilating, and Air-Conditioning," for computer room systems, developed with ASHRAE Technical Committee (TC) 9.9.Clarifications for the use of prescriptive provisions when performing building energy use modeling, and revisions to enhance capturing daylighting when performing modeling calculations.Improved equipment efficiencies for chillers.Improved requirements for expanded use of energy recovery, small-motor efficiencies, and fan power control and credits.New provisions for commercial refrigeration equipment and improved controls for heat rejection and boiler equipment.Revised equipment efficiencies for heat pumps, packaged terminal air conditioners (PTACs), single package vertical heat pumps and air conditioners (SPVHP and SPVAC), and evaporative condensers.Improvements to daylighting controls, space-by-space lighting power density limits, and thresholds for toplighting.Revised, stricter opaque element and fenestration requirements at a reasonable level of cost-effectiveness.
ANSI/ASHRAE/IES Standard 90.1-2019 (current edition)ĪNSI/ASHRAE/IES Standard 90.1-2019 Purchase SI Edition Coming Soon Also Available :.